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TitleHydraulic properties and scale effects investigation in regional rock aquifers, south-western Quebec, Canada
AuthorNastev, M; Savard, M M; Lapcevic, P; Lefebvre, R; Martel, R
SourceHydrogeology Journal vol. 12, no. 3, 2004 p. 257-269,
LinksAbstract - Résumé
Alt SeriesGeological Survey of Canada, Contribution Series 2002164
PublisherSpringer Nature
Mediapaper; on-line; digital
File formatpdf
NTS31G/01; 31G/02; 31G/07; 31G/08; 31G/09; 31G/10; 31G/15; 31G/16; 31H/03; 31H/04; 31H/05; 31H/06; 31H/11; 31H/12; 31H/13; 31H/14
AreaMontreal, QC; Oka National Park; Mirabel, QC
Lat/Long WENS -75.0000 -73.0000 46.0000 45.0000
Subjectshydrogeology; hydraulic analyses; aquifers; groundwater; groundwater resources; groundwater flow; fractures; hydraulic conductivity; dolostones; limestones, crystalline; aquifer tests; sedimentary rocks; permeability
Illustrationslocation maps; geological sketch maps; stratigraphic cross-sections; bar graphs; graphs; tables; formulae
Released2004 04 27
AbstractThis paper reports on the characterization of hydraulic properties of regional rock aquifers carried out within a groundwater resources assessment project in the St. Lawrence Lowlands of south-western Quebec. To understand the aquifer behavior at both the fracture level and at field scale, hydraulic investigations were carried out using various aquifer tests. The groundwater flow at the local scale is controlled mostly by the fracture system. Results of the constant-head injection tests show a weak decreasing trend of hydraulic conductivity with depth indicating that a major part of the groundwater flow occurs in the first meters of the rock sequence. At the regional scale, the equivalent porous media approach is applicable. The hydraulic conductivity measurements were correlated to the scale of the aquifer tests expressed with the investigated aquifer volume. A simple interpolation procedure for the hydraulic conductivity field was developed based on the distance between field measurements and the tested aquifer volumes. The regional distribution of the hydraulic conductivity for the major fractured aquifer units indicates that dolostone is the most permeable whereas sandstone and crystalline rocks are the least permeable units.